Issue |
EPJ Web of Conferences
Volume 47, 2013
Hot Planets and Cool Stars
|
|
---|---|---|
Article Number | 09001 | |
Number of page(s) | 7 | |
Section | Characterization of Host Stars | |
DOI | https://doi.org/10.1051/epjconf/20134709001 | |
Published online | 25 April 2013 |
https://doi.org/10.1051/epjconf/20134709001
Characterization of exoplanet hosts
Implications for planet formation
Space Telescope Science Institute, 3700 San Martin Dr., Baltimore, MD 21218, USA
a e-mail: valenti@stsci.edu
Spectroscopic analysis of exoplanet hosts and the stellar sample from which they are drawn provides abundances and other properties that quantitively constrain models of planet formation. The program Spectroscopy Made Easy (SME) determines stellar parameters by fitting observed spectra, though line lists must be selected wisely. For giant planets, it is now well established that stars with higher metallicity are more likely to have detected companions. Stellar metallicity does not seem to affect the formation and/or migration of detectable planets less massive than Neptune, especially when considering only the most massive planet in the system. In systems with at least one planet less than 10 times the mass of Earth, the mass of the most massive planet increases dramatically with host star metallicity. This may reflect metallicity dependent timescales for core formation, envelope accretion, and/or migration into the detection zone.
© Owned by the authors, published by EDP Sciences, 2013
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.